Another source of copper tubing is to use a length of either 1/2-inch Heliax (LDF4-50A) or 7/8-inch (LDF5-50A). Often available in short pieces at hamfests. I plan to use some 1/2-inch to make a 4-foot loop one day (to use on 630m Rx). 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag Business e-mail: dubususa at gmail.com